ViaLite ViaLiteHD HRK3-HB-8 User manual

ViaLiteHD
Fibre Optic Link System
3U chassis
User Manual
HRK3-HB-8
CR4651 05/01/2021
Pulse Power & Measurement Ltd, 65 Shrivenham Hundred Business Park, Watchfield, Swindon, Wiltshire SN68TY, UK
Tel [phone] Fax [phone] Email [e-mail] Web www.vialite.com

HRK3-HB-8 VIALITEHD 3U CHASSIS HANDBOOK
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Instrument Care and Safety Information
Please read the whole of this section before using your ViaLiteHD product. It contains important safety
information and will enable you to get the most from your Fibre Optic link.
Electrical Safety The ViaLiteHD chassis provides the termination for power inputs and can be fitted with power supplies.
The ViaLiteHD chassis is a Safety Class 1 product (having metal chassis directly connected to earth via the power
supply cable).
When operating the equipment note the following precautions:
Hazardous voltages exist within the equipment.
There are no user serviceable parts inside; the covers MUST NOT be removed.
There are no user replaceable fuses in the chassis mounted equipment. Replacement should only be carried out
by a ViaLite Communications technician.
The chassis earth stud SHOULD be connected to the safety earth.
When using a 2 pin power supply cable the chassis earth stud MUST be connected to the safety earth.
The ViaLiteHD Power Supply Modules do not have an isolating switch on the mains voltage inlet. For this
reason, the ViaLiteHD chassis MUST be installed within easy reach of a clearly labelled dual pole mains
isolation switch, which supplies the equipment.
PSU modules are fused on the mains live feed only. A second fuse should be used for the neutral connection
where the polarity of the connectors can be reversed; rating should match those given in section 5.1.1.
ESD Precautions The ViaLiteHD chassis is not equipped with any active electronics but it may be fitted with them.
Precautions for handling electro-static sensitive devices should be observed when handling all ViaLiteHD modules.
Technicians should ensure that they use effective personal grounding (i.e. ESD wrist strap etc.) when servicing the
equipment. Any equipment or tools used should be grounded to prevent static charge build-up. Good practice should
be observed at all times. For reference see relevant standards.
EN 61340-5-1, “Protection of Electronic Devices from Electrostatic Phenomena – General Requirements”
Optical Safety The ViaLiteHD chassis is not equipped with optical units but it may be fitted with them
The ViaLiteHD RF Transmitter and Transceiver modules contain laser diode sources operating at nominal
wavelengths of 1270nm to 1610nm.
These devices are rated as EN60825-1 CLASS 1 radiation emitting devices. A class 1 laser is safe under all
conditions of normal use.
When operating the equipment note the following precautions:
Never look into the end of an optical fibre directly or by reflection either with the naked eye or through an optical
instrument.
Never leave equipment with radiating bare fibres –always cap the connectors.
Do not remove equipment external covers when operating.
Hot surface The ViaLiteHD Redundancy load module may have hot surfaces when operating under fulll load. The hot surfaces are
not accessible when fitted in an approved chassis installation.
Suitable precaution should be taken when handling this device.
Allow to cool for 10 minutes
Do not touch metallic surfaces or printed circuit board when hot.
When handling, hold front panel and handle only.

HRK3-HB-8 VIALITEHD 3U CHASSIS HANDBOOK
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TABLE OF CONTENTS
1INITIAL INSPECTION............................................................................................................................................................................5
2INTRODUCTION TO THE VIALITEHD RANGE.....................................................................................................................................5
3VIALITEHD AND VIALITE CLASSIC COMPATIBILITY..........................................................................................................................6
4VIALITEHD SYSTEM COMPONENTS...................................................................................................................................................7
4.1 ViaLiteHD 19” chassis................................................................................................................................................................7
4.2 Description.................................................................................................................................................................................7
4.3 Power Interface Management....................................................................................................................................................7
4.3.1 External backplane power .............................................................................................................................................7
4.3.2 Module bias feed...........................................................................................................................................................8
4.4 Alarm Management ...................................................................................................................................................................8
4.4.1 “Alarm Concentrator” 50way Connector J1....................................................................................................................8
4.4.2 Connecting to an "open collector" output.......................................................................................................................8
4.4.3 Summary Alarm.............................................................................................................................................................8
4.4.4 Module Alarm Defeat.....................................................................................................................................................9
4.4.5 Using open collector alarms with controller cards ..........................................................................................................9
4.4.6 Using open collector alarms with RF switch and RF splitter cards .................................................................................9
4.5 Heat management.....................................................................................................................................................................9
4.6 Unused module positions...........................................................................................................................................................9
4.7 Minimum power supply load.....................................................................................................................................................10
4.8 Chassis Specification...............................................................................................................................................................11
4.9 Chassis connector pinouts.......................................................................................................................................................11
4.9.1 Chassis connector pin out J4 & J19-31........................................................................................................................12
4.9.1.1 Chassis connector pin out J4 & J19-31 - serial numbers below and including SN1221901..................................................12
4.9.1.2 Chassis connector pin out J4 & J19-31 - serial numbers above and including SN1221902..................................................13
4.9.2 LNA feed and BUC feed pin assignment for different module types.............................................................................14
4.10 Fan replacement......................................................................................................................................................................15
5VIALITEHD POWER SUPPLIES..........................................................................................................................................................16
5.1 6HP Chassis Power Supplies ..................................................................................................................................................16
5.1.1 Specification................................................................................................................................................................17
5.2 19” Chassis Power Requirements............................................................................................................................................17
5.3 Redundancy load module, HRL ...............................................................................................................................................17
5.3.1 Redundancy load module, plug-in card........................................................................................................................18
5.3.2 Redundancy load module, front panel .........................................................................................................................18
5.3.3 Redundancy load module, DIP switches......................................................................................................................18
5.3.4 Redundancy load module, setting the load DIP switches.............................................................................................19
5.3.5 Redundancy load module, using with SNMP and controller module.............................................................................19
5.4 Power Supply HPS-CS-3 for use with OEM modules (HRx-xx-xM-xx)......................................................................................19
6INSTALLATION GUIDE .......................................................................................................................................................................21
6.1 Chassis Installation..................................................................................................................................................................21
6.2 6HP Power Supply Module Installation (slots 15 and 16) .........................................................................................................21
6.3 5HP Standard Plug-in Modules (slots 1-13) .............................................................................................................................21
6.4 5HP Blindmate Plug-in Modules (slots 1-13)............................................................................................................................22
6.5 7HP Standard Plug-in Modules (slot 14 only)...........................................................................................................................23
6.6 5HP blanking panel installation (slots 1-13)..............................................................................................................................24
6.7 7HP blanking panel installation (slot 14) ..................................................................................................................................25
6.8 6HP blanking panel installation (slots 15, 16)...........................................................................................................................25
6.9 Separate blindmate panels ......................................................................................................................................................25
6.10 Electrical power connection .....................................................................................................................................................25
6.11 Typical redundancy configurations...........................................................................................................................................27
6.11.1 Four 1:1 redundant single transmitters, standard modules...........................................................................................27
6.11.2 Four 1:1 redundant single transmitters, blindmate modules.........................................................................................27
6.11.3 Six 1:1 redundant dual transmitters, standard modules ...............................................................................................28
6.11.4 Six 1:1 redundant dual transmitters, blindmate modules..............................................................................................28
6.11.5 Four 1:1 redundant single receivers, standard modules...............................................................................................29
6.11.6 Four 1:1 redundant single receivers, blindmate modules.............................................................................................29
6.11.7 Six 1:1 redundant dual receivers, standard modules....................................................................................................30
6.11.8 Six 1:1 redundant dual receivers, blindmate modules..................................................................................................30
6.11.9 Four 1:1 redundant links, blindmate modules, using single transmitters TX and single receivers RX...........................31
6.11.10Six 1:1 redundant links, blindmate modules, using dual transmitters DTX and dual receivers DRX..............................32
6.11.11Uplink and downlink 1:1 redundant, blindmate modules using single transmitters TX and single receivers RX............33
6.11.12Six 1:1 redundant transceivers TRX, standard modules ..............................................................................................34
6.11.13Six 1:1 redundant links, standard modules, using transceivers TRX............................................................................35
6.12 Shock and vibration.................................................................................................................................................................36
7PART NUMBERING.............................................................................................................................................................................38
8MAINTENANCE AND FAULT-FINDING GUIDE...................................................................................................................................39

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9PRODUCT WARRANTY......................................................................................................................................................................40
10 FCC APPROVAL .................................................................................................................................................................................40

HRK3-HB-8 VIALITEHD 3U CHASSIS HANDBOOK
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1 Initial Inspection
Unpack and inspect the equipment as soon as possible. If there is any sign of damage or any parts missing, do not install the equipment
before seeking advice from ViaLite Communications or your local agent.
The equipment received should match the delivery note that is shipped with the equipment. If there are any discrepancies, contact ViaLite
Communications or your local agent.
2 Introduction to the ViaLiteHD Range
The ViaLiteHD range has been developed to provide a modular solution to the transmission of a wide range of analogue and digital data
where traditional ‘copper wire’ systems cannot be used, for example, in electrically noisy environments or over long distances.
The range is ideal for permanent and semi-permanent installation in Satellite communications, GPS, antenna remoting and other related
applications.
The variety of links available includes low frequency timing (2kHz) to C-Band RF (7.5GHz), RF splitters, amplifiers and switches; they also
include a full suite of supporting functions including RS232/422/485, Ethernet and control systems to monitor and control the system with
both Web and SNMP interfaces.
All ViaLiteHD equipment operates over high quality glass fibre optic cable, which can be supplied in low-cost 3mm jacket, riser and outdoor
specifications. The links can also be used with existing cable systems at customer premises.
A ViaLiteHD system can be added to at any time, enabling the system to evolve with the needs of the user.
ViaLiteHD is a product brand manufactured by Pulse Power and Measurement Ltd (PPM). ViaLite Communications is a division of Pulse
Power and Measurement Ltd (PPM).

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3 ViaLiteHD and ViaLite Classic compatibility
The RF and optical interfaces of most ViaLiteHD and ViaLite Classic modules are compatible. However the physical size, mounting
systems and control of the modules are different, so it will not be possible to fit ViaLiteHD module in a ViaLite Classic chassis or housing
and vice versa. However it is possible for modules of different types to interwork and be used to expand existing systems. Listed below is a
brief summary of inter family compatibility.
RF Compatible optical and RF interfaces
RF + digital Compatible optical and RF interfaces
RS232 Compatible optical and digital interfaces
RS422 Compatible optical and digital interfaces
RS485 Compatible optical and digital interfaces
Ethernet Modules of matching speed have compatible optical and digital interfaces
Redundancy Switch Compatible RF interfaces may need interface cable (no optical interface)
RF Splitters Compatible RF interfaces (no optical interface)
Amplifier Compatible RF interfaces (no optical interface)
SNMP Not compatible
Contact ViaLite Communications or your local agent for more details.

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4 ViaLiteHD System Components
4.1 ViaLiteHD 19” chassis
4.2 Description
The 19” chassis is suitable for 19” rack mounting. There are two versions, one for alternating current (AC) power and one for direct current
(DC) power.
The chassis accommodates up to thirteen (5HP) plug-in RF/data modules, one (7HP) control module and two (6HP) plug-in power supplies.
The hot-swappable, dual power supply capability provides full redundancy and maximum reliability to avoid traffic loss in the event of a power
supply failure. The chassis incorporates a backplane PCB for the distribution of DC power, status alarms and data.
Note: Each power supply position requires a separate power source to provide fully redundant protection.
The plug-in modules simply plug into the chassis, allowing the user to replace modules quickly and easily or to upgrade the system with
additional modules at any time. For ease of upgrade and replacement, most modules are offered with the option of a Blind mate interface,
where all interface cables are connected to in the chassis hardware and not the module.
Each of the RF/data module positions has a dedicated D type connector that provides access to all the digital data for that module; this is
fitted to the chassis backplane.
All of the module alarm outputs, both digital alarms and analogue monitors, are routed to a SCSI-3 connector on the rear panel of the
chassis. This connector also has the interface for the summary alarm relay if a module has been fitted to provide this function. This permits
the integration of the ViaLiteHD equipment into a Maintenance & Control system.
All of the module external power connections (LNA feeds) and chassis backplane external power connections are routed to a second SCSI-3
connector on the rear panel of the chassis.
Module slots 1-14 have a data bus that can be used for sending and receiving data between modules.
4.3 Power Interface Management
External power can be provided to, or taken from the chassis via the “Power Concentrator” connector J4, the current should be limited to 1A
per pin for single pins or 0.8A per pin for shared pins. The power level (sum of chassis and external power) must be within the capability of
the chassis power supplies, see specification in section 5.2.
4.3.1 External backplane power
If the chassis is powered externally the input DC voltage measured at the power concentrator connector should be 12Vdc +/- 0.5V. If chassis
power supplies are also fitted we would advise that a low voltage drop diode (i.e. Schottky or similar) be used to OR the power feeds.
It is also possible to provide external power to a chassis fitted with PSUs, for this reason the current share bus (CSB) is available on “Power
Concentrator” connector J4. If this option is used the chassis must be interfaced to ViaLite Communications approved external power
supplies, and the +12Vdc, GND and CSB lines for each power source should be connected in parallel.

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4.3.2 Module bias feed
It is possible to provide a bias voltage from the modules to connected devices. Dependent on module type, this can be either internally
sourced from the module or provided via the “Power Concentrator” connector J4. The current limit is dependent on module type fitted.
4.4 Alarm Management
The alarm strategy on the ViaLiteHD system caters for all levels of Alarm and Monitoring System complexity from simple module failure LED
indication, to local and remote end alarm notification and redundancy switching.
All modules provide an alarm output to the chassis backplane to indicate that the module is present and working correctly. The alarm is fail-
safe in that when a working module is withdrawn from the chassis an alarm is registered for that module position.
4.4.1 “Alarm Concentrator” 50way Connector J1
All module alarms are provided for the user on the 50 way “Alarm Concentrator” connector on the chassis rear panel. These outputs are
"open collector" outputs. There are also two analogue monitors per module position. Their function depends on the type of module fitted.
4.4.2 Connecting to an "open collector" output.
The alarm output pin should be connected to a suitable current source (a positive voltage via a 10kohm pull-up resistor is adequate). When
the module is in a working (non-alarm) state, the alarm output pin is short circuited to ground by the module. If the module enters an alarm
state, the alarm pin is released to a high impedance state and current is no longer drawn from the constant current source. In the case of a
positive voltage and pull-up resistor, the voltage on the alarm output pin will rise to indicate the alarm state. It follows that, if a module is
removed from the chassis, the alarm will be raised for that module position.
The capability of the open collector is dependent on the module that provides it.
The typical capability of the Open Collector/Drain is 50mA maximum current sink and 15V maximum voltage (Vext)
4.4.3 Summary Alarm
A summary alarm can be provided if an appropriate module is fitted in the 7HP slot (slot 14). This function can be provided by either of the
following modules
SNMP control module (automatic sensing of module presence)
Summary alarm relay module (manual setting of module presence)
If no module is fitted the summary alarm relay connections will all be open circuit.
If an appropriate module is fitted there is a volt free 3-pin connection present on “Power Concentrator” Connector J4. The three connections
are Normally Open (NO), Common (COM) and Normally Closed (NC).
Condition 1 - Power applied to chassis, no alarms (i.e. normal condition)
Pin NO is open circuit
Pin NC is connected to COM
Condition 2 - Power removed from chassis and/or one or more module alarms (i.e. Alarm condition)
Pin NO is connected to COM
Pin NC is open circuit
RELAY_x [1= normally closed, 2=common, 3=normally open]
Vext
Pull up
Resistor
Alarm
Ground
Internal to module External to module

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4.4.4 Module Alarm Defeat
In some installations, the chassis might not be fully populated with modules. In this case, the module alarm output for the vacant positions
would register a continuous alarm state and the Summary Alarm Output would also register an alarm condition.
It is very important to ensure that the DIP switches on the Summary alarm relay module or software alarm mask of the SNMP control module
for chassis positions where modules are “present” is set correctly. If a DIP switches/software mask is set incorrectly for a “present” module,
then if this module were to fail, NEITHER THE MODULE ALARM NOR THE SUMMARY ALARM WOULD DETECT THE FAILURE. The
front panel LEDs of the module will always register an alarm condition correctly regardless of the state of the DIP switches/software mask.
4.4.5 Using open collector alarms with controller cards
When a chassis is fitted with a controller card (i.e. SNMP and web controller or summary alarm card) all the alarm lines will be loaded and
pulled up. The alarm lines are pulled up to as shown below.
SNMP and web controller pulled up to 3.3V via 4.7k ohms* (see warning below)
Summary Alarm pulled up to 5V via 100k ohm, with series diode
* Applying external voltage to these pins may cause damage, contact ViaLite communications
Note: the alarm line for slot 14 is always pulled up irrespective of the card status, these cards are all fitted with summary alarm relays.
4.4.6 Using open collector alarms with RF switch and RF splitter cards
When a chassis is fitted with an RF switch or RF splitter card the alarm lines of the adjacent slots will be loaded and pulled up. The alarm
lines are pulled up to as shown below.
RF switch or RF splitter pulled up to 5V via 10k ohm, with series diode
4.5 Heat management
The chassis is designed to meet its environmental specification, when operating in a typical configuration. A typical configuration is all
modules populated (13*Transceiver, 1*SNMP, 2*PSU), chassis power consumption 67 watts, no external DC power input or DC output and
no obstruction to convection air path.
Under normal operating conditions module slots 1-14 are cooled by convection, module slots 15 and 16 are force air cooled with exhaust at
rear of the chassis. The chassis will continue to run without the forced cooling provided by the integrated fan but its operating temperature
will be reduced.
Single PSU only fitted: maximum operating temperature reduced by -5C
Airflow above chassis blocked: maximum operating temperature reduced by -10C
Airflow below chassis blocked: maximum operating temperature reduced by -5C
No forced air: maximum operating temperature reduced by -10C
Also see section 5.2 that details the typical power consumption of most common types of modules.
4.6 Unused module positions
We advised that all unused slots be fitted with blanking panels. Different widths of blanking panel are available these fit the 5HP general
purpose (slots 1-13), 7HP controller card slots (slot 14), 6HP power supply slots (slots 15,16). They can be used with any ViaLiteHD 19inch
chassis and will prevent accidental/unwanted access and the ingress of dust. Blanking panels available are.
85044 ViaLiteHD Blank Panel, 5HP Slots 1-13
85050 Reusable ViaLiteHD Blank Panel, 5HP Slots 1-13
HPS-0 ViaLiteHD Blank Panel, 6HP Slot 15, 16
85046 ViaLiteHD Blank Panel, 7HP Slot 14
85049 Reusable ViaLiteHD Blank Panel, 7HP Slot 14
Contact ViaLite Communications or your local agent for more details.
There are two types of the 5 and 7 HP blanking panels. The standard blanking panels are fitted with snap in plastic barbs. These are
designed to permanently hold the blanking panel in position. Please ensure that you have fully planned the configuration of your chassis, as
the plastic barbs are a close tolerance fit and removal results in the barbs being broken; the panel should then be discarded.

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85044 ViaLiteHD Blank Panel, 5HP 85046 ViaLiteHD Blank Panel, 7HP
There are also reusable panels available (85049 and 85050) with handles to keep them in place.
The 6 HP blanking panels are fitted with handles to secure them into either slot 15 or 16. These are design to permanently hold the blanking
panel in position.
HPS-0 ViaLiteHD Blank Panel, 6HP
4.7 Minimum power supply load
If the chassis power supplies are operating in dual redundant configuration, there should be a minimum load of 12 watts to ensure that both
power supplies are active, below this level one power supply may be in idle mode (its LED will not be illuminated). If necessary a
redundancy load module can be supplied, to fit into any unused slots to meet this minimum power requirement, see section 5.3.

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4.8 Chassis Specification
HRK3
HRK3-DC
Description
19” Rack Mounting Chassis
Max. No. of 5HP modules
13 (in slots 1-13 only)
Max. No. of 7HP modules
1 (in slots 14 only)
Max. No. of 6HP modules
2 (in slots 15,16 only)
19” Rack Mounting
Yes
Desktop Mounting
Not Suitable (use ViaLite Classic products)
Width, internally
84 HP
Width, externally
483 mm
Height, internally
3U
Height, externally
134 mm
Depth, externally
265 mm
Maximum weight
1.8 kg (chassis ONLY), 7.2 kg (chassis and slot modules)
Cooling
Convection (slots 1-14); Forced air (slots 15,16) exhaust at rear
Operating Temperature
-10C to +50C
Humidity
0-95%, Non-condensing
Power Supply compatibility
HPS
HPS-DC
Chassis power input
2 x IEC 60320, 3 pins each
2 x screw terminal, 2 pins each
Chassis earth
Rear panel M4 stud
Fan power
IDC male, Dual row 6 pin
DC power to rear mounted fan cassette
Data Connector
9way Female D with screw-lock termination at the rear of each module position (1 per 5 HP slot).
Data input/output for individual modules.
Alarm Concentrator Connector
J1: SCSI-3
This concentrates the alarms from each module to a common point.
Open Drain alarm (1 per 5 & 7HP slot)
Power Good (2 per 6 HP slot)
Analogue Monitor (2 per 5 HP slot)
Ground
Type: 50 way connector Har-mik® female [SCSI-3]
Power Concentrator Connector
J4: SCSI-3
This concentrates the power connections and summary alarms to a common point.
+12Vdc backplane power
Ground
Current sharing bus
Summary Alarm relay (optional)
External LNA bias (1 per 5 HP slot)
Type: 50 way connector Har-mik® female [SCSI-3]
ViaLiteHD plug-in module
compatibility
All types
4.9 Chassis connector pinouts
All connectors are viewed looking into connector from mating interface
Each connector is shown in the correct orientation for normally mounted 3U chassis
Pin Out –J32 “Fan power” connector
Pin
Chassis Fan
Pin
Chassis Fan
Pin
Chassis Fan
1
+12Vdc
3
+12Vdc
5
GND
2
+12Vdc
4
GND
6
GND
Note: Colour indicates relevant connector drawing
An optional mating half cable is available for use in ViaLiteHD system
Chassis connector:
50 way SCSI-3 Har-mik® female
Module connector:
9 way D-Type connector female
Fan connector:
6 way IDC dual row male
No.1 contact
2 x 4-40 UNC thread
9
1
6
5
No.5 contact
No.6 contact
No.9 contact
Contact No 1
Contact No 6
Contact No 2
Contact No 6
Contact No 26
Contact No 1Contact No 25
Contact No 50

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Pin out –J1 “Alarm Concentrator” connector*
Pin
Chassis J1*
Pin
Chassis J1*
Pin
Chassis J1*
Pin
Chassis J1*
1
GND
14
Analogue_monitor_B_8
27
ALARM_3
40
Analogue_monitor_B_11
2
ALARM_2
15
Analogue_monitor_B_10
28
ALARM_5
41
Analogue_monitor_B_13
3
ALARM_4
16
Analogue_monitor_B_12
29
ALARM_7
42
GND
4
ALARM_6
17
GND
30
ALARM_9
43
GND
5
ALARM_8
18
GND
31
ALARM_11
44
Analogue_monitor_A_2
6
ALARM_10
19
Analogue_monitor_A_1
32
ALARM_13
45
Analogue_monitor_A_4
7
ALARM_12
20
Analogue_monitor_A_3
33
GND
46
Analogue_monitor_A_6
8
ALARM_14
21
Analogue_monitor_A_5
34
ALARM_P_1
47
Analogue_monitor_A_8
9
ALARM_P_2
22
Analogue_monitor_A_7
35
Analogue_monitor_B_1
48
Analogue_monitor_A_10
10
GND
23
Analogue_monitor_A_9
36
Analogue_monitor_B_3
49
Analogue_monitor_A_12
11
Analogue_monitor_B_2
24
Analogue_monitor_A_11
37
Analogue_monitor_B_5
50
GND
12
Analogue_monitor_B_4
25
Analogue_monitor_A_13
38
Analogue_monitor_B_7
13
Analogue_monitor_B_6
26
ALARM_1
39
Analogue_monitor_B_9
Note: See your module handbooks for assignment and function of the “Analogue_monitor” pins
4.9.1 Chassis connector pin out J4 & J19-31
The pin out of connectors J4 & J19-31 has been changed, to add additional functionality to the chassis. Check serial number to find correct
pin out. See section 4.9.1.1 and 4.9.1.2 below. The approximate last shipment date of the early revision racks is July 2013, contact ViaLite
Communications for more details.
4.9.1.1 Chassis connector pin out J4 & J19-31 - serial numbers below and including SN1221901
Below is the pin out of J4 and J19-J31 for all early production chassis with serial number below and including SN1221901.
Pin Out –J19 to J31 “Module Data” connectors
If connected to a TX module (single transmitter)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
Do not connect
7
RX_422_OUT-
2
Do not connect
5
Do not connect
8
RX_232_OUT [TTL_OUT]*
3
Do not connect
6
RX_422_OUT+
9
RX_RTS_485
If connected to a RX module (single receiver)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX_232_IN [TTL_IN]*
7
Do not connect
2
TX_422_IN+
5
Do not connect
8
Do not connect
3
TX_422_IN-*
6
Do not connect
9
Do not connect
If connected to a TRX module (transceiver)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX_232_IN [TTL_IN]*
7
RX_422_OUT-
2
TX_422_IN+
5
Do not connect
8
RX_232_OUT [TTL_OUT]*
3
TX_422_IN-*
6
RX_422_OUT+
9
RX_RTS_485
If connected to a DTX module (dual transmitter)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX1_232_IN [TTL1_IN]*
7
TX2_422_IN-
2
TX1_422_IN+
5
Do not connect
8
TX2_232_IN [TTL2_IN]*
3
TX1_422_IN-
6
TX2_422_IN+
9
Do not connect
If connected to a DRX module (dual receiver)
NOT supported
If connected to a Serial module (transceiver)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX_232_IN [TTL_IN]*
7
RX_422_OUT-
2
TX_422_IN+
5
Do not connect
8
RX_232_OUT [TTL_OUT]*
3
TX_422_IN-*
6
RX_422_OUT+
9
RX_RTS_485
Note: Data on the connector is only for the module fitted in that 5HP slot and is printed beneath (J19 = slot 1, J20 = slot 2 … J31 = Slot 13)
Connections in Blue text are optional and only available on some types of module

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13
Pin out –J4 “Power Concentrator” connector*
Pin
Chassis J4*
Pin
Chassis J4*
Pin
Chassis J4*
Pin
Chassis J4*
1
CSB
14
GND
27
Relay_1 (NC)
40
LNA_feed_3
2
Relay_2 (COM)
15
LNA_feed_2
28
GND
41
LNA_feed_5
3
GND
16
LNA_feed_4
29
GND
42
LNA_feed_7
4
GND
17
LNA_feed_6
30
GND
43
LNA_feed_9
5
GND
18
LNA_feed_8
31
+12Vdc
44
LNA_feed_11
6
+12Vdc
19
LNA_feed_10
32
+12Vdc
45
LNA_feed_13
7
+12Vdc
20
LNA_feed_12
33
+12Vdc
46
GND
8
+12Vdc
21
GND
34
+12Vdc
47
GND
9
+12Vdc
22
GND
35
+12Vdc
48
GND
10
+12Vdc
23
GND
36
+12Vdc
49
GND
11
+12Vdc
24
GND
37
+12Vdc
50
GND
12
+12Vdc
25
GND
38
LNA_feed_1
13
+12Vdc
26
Relay_3 (NO)
39
GND
Note: The Chassis and power ground are common
4.9.1.2 Chassis connector pin out J4 & J19-31 - serial numbers above and including SN1221902
Below is the pin out of J4 and J19-J31 for all later production chassis with serial number above and including SN1221902.
The backplane is marked ‘Issue C’ –this description can be found on the PCB between slot 13 and 14 when viewed from the front.
Pin Out –J19 to J31 “Module Data” connectors
If connected to a TX module (single transmitter)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
Do not connect
7
RX_422_OUT-
2
Do not connect
5
Do not connect
8
RX_232_OUT [TTL_OUT]*
3
Do not connect
6
RX_422_OUT+
9
RX_RTS_485
If connected to a RX module (single receiver)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX_232_IN [TTL_IN]*
7
Do not connect
2
TX_422_IN+
5
Do not connect
8
Do not connect
3
TX_422_IN-*
6
Do not connect
9
Do not connect
If connected to a TRX module (transceiver)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX_232_IN [TTL_IN]*
7
RX_422_OUT-
2
TX_422_IN+
5
Do not connect
8
RX_232_OUT [TTL_OUT]*
3
TX_422_IN-*
6
RX_422_OUT+
9
RX_RTS_485
If connected to a DTX module (dual transmitter)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX1_232_IN [TTL1_IN]*
7
TX2_422_IN-
2
TX1_422_IN+
5
Do not connect
8
TX2_232_IN [TTL2_IN]*
3
TX1_422_IN-
6
TX2_422_IN+
9
Do not connect
If connected to a DRX module (dual receiver)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
RX1_232_OUT [TTL1_OUT]*
7
RX2_422_OUT-
2
RX1_422_OUT+
5
RX1_RTS_485
8
RX2_232_OUT [TTL2_OUT]*
3
RX1_422_OUT-
6
RX2_422_OUT+
9
RX2_RTS_485
If connected to a Serial module (transceiver)
Pin
Module
Pin
Module
Pin
Module
1
GND
4
TX_232_IN [TTL_IN]*
7
RX_422_OUT-
2
TX_422_IN+
5
Do not connect
8
RX_232_OUT [TTL_OUT]*
3
TX_422_IN-*
6
RX_422_OUT+
9
RX_RTS_485
Note: Data on the connector is only for the module fitted in that 5HP slot and is printed beneath (J19 = slot 1, J20 = slot 2 … J31 = Slot 13)
Connections in Blue are optional and only available on some types of module
Pin out –J4 “Power Concentrator” connector*

HRK3-HB-8 VIALITEHD 3U CHASSIS HANDBOOK
14
Pin
Chassis J4*
Pin
Chassis J4*
Pin
Chassis J4*
Pin
Chassis J4*
1
CSB
14
GND
27
Relay_1 (NC)
40
LNA_feed_3
2
Relay_2 (COM)
15
LNA_feed_2
28
GND
41
LNA_feed_5
3
GND
16
LNA_feed_4
29
GND
42
LNA_feed_7
4
GND
17
LNA_feed_6
30
BUC_feed_1
43
LNA_feed_9
5
GND
18
LNA_feed_8
31
BUC_feed_3
44
LNA_feed_11
6
BUC_feed_2
19
LNA_feed_10
32
BUC_feed_5
45
LNA_feed_13
7
BUC_feed_4
20
LNA_feed_12
33
BUC_feed_7
46
GND
8
BUC_feed_6
21
GND
34
BUC_feed_9
47
GND
9
BUC_feed_8
22
GND
35
BUC_feed_11
48
GND
10
BUC_feed_10
23
GND
36
BUC_feed_13
49
GND
11
BUC_feed_12
24
GND
37
+12Vdc
50
GND
12
+12Vdc
25
GND
38
LNA_feed_1
13
+12Vdc
26
Relay_3 (NO)
39
GND
Note: The Chassis and power ground are common
4.9.2 LNA feed and BUC feed pin assignment for different module types
The function of J4 pins described as LNA_feed and BUC_feed can vary dependant on the module type. The table below shows pin
assignment for all different module types.
The “X” used on the pin assignment indicates the slot to which the LNA or BUC feed is connected (i.e. LNA_feed_8 is connected to slot 8).
When an “A” or “B” suffix is shown this is used to indicated which channel of the dual module (i.e. “LNA_feed_A_X” or the LNA or BUC feed)
is connected to, it will match with the connector letter on the rear panel. Channel “A” is the upper channel and channel “B” is the lower
channel. Transceivers always have the receiver as the upper channel and the transmitter as the lower channel.
The LNA and BUC feed will only be connected if the module in the slot has the appropriate functionality.
J4 pin assignment for a transmitter, TX module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
TX
LNA_feed_X
NC (Not Connected)
J4 pin assignment for a receiver, RX module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
RX
NC (Not Connected)
BUC_feed_X
J4 pin assignment for a transceiver, TRX module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
TRX
LNA_feed_X
BUC_feed_X
J4 pin assignment for a dual transmitter, DTX module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
DTX
LNA_feed_A_X
LNA_feed_B_X
J4 pin assignment for a dual receiver, DRX module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
DRX
BUC_feed_A_X
BUC_feed_B_X
J4 pin assignment for a Switch, SW module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
SW
Switch_feed_X
NC (Not Connected)
J4 pin assignment for a Splitter, SP module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
SP
Splitter_feed_X
NC (Not Connected)
J4 pin assignment for a single Amplifier, AMP module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
AMP
Amplifier_feed_X
NC (Not Connected)
J4 pin assignment for a Dual Amplifier, AMP module
Chassis J4, LNA_feed_X
BUC_feed_X (J4)
AMP
Amplifier_feed_A_X
Amplifier_feed_B_X

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15
4.10 Fan replacement
If the fan is not turning, the fan cartridge assembly should be replaced. This can be completed without disconnecting the chassis from the
mains supply.
Please ensure that when the fan is outside of its safety enclosure it is disconnected from its power connector
The fan is removed by the following procedure.
Disconnect the fan power connector J32.
Using a magnetic screw driver, remove the two screws fixing the fan cassette
Withdraw the fan cassette
The fan is replaced by the following procedure.
Insert the fan cassette.
Using a magnetic screw driver fix the cassette in place using the two screws provided
Connect the fan power connector J32,
NOTE: The FAN connector is polarised, match the slot in the receptacle with the key of the plug.
Check that air is being exhausted.
View of fan connector showing polarisation ViaLiteHD Power Supplies
Plug key
Receptacle
slot

HRK3-HB-8 VIALITEHD 3U CHASSIS HANDBOOK
16
5 ViaLiteHD power supplies
5.1 6HP Chassis Power Supplies
The HPS series power supplies provide DC power to all plug-in modules in the 19” chassis. Two versions are offered, HPS with universal
mains input and HPS-DC with wide range DC input. Either one or two HPS modules can be fitted. Two HPS modules will provide dual
redundant operation. Separate supply inputs mean that they can be operated from different supplies for even higher levels of availability.
During normal operation, the supplies current share to maximise reliability. In the event of a failure all the chassis current will be provided by
the remaining operational module. The front panel LED provides a visual indication of failure, and a power good alarm output is available for
use at the “Alarm Concentrator” connector.
The modules are fan-cooled for maximum reliability and each PSU offers an MTBF of 270,000 hours at an ambient temperature of 40C.
The HPS power supply has a wide range alternating current (AC) input and can operate from 110V and 230V nominal mains supplies. Mains
power is applied at the rear of the chassis via an earthed IEC60320 connector, and regulated direct current (DC) power is supplied to the
chassis backplane PCB for distribution to the plug-in modules. This connector is also used for reporting PSU alarm status.
For DC versions HPS-DC, power is applied at the rear of the chassis via a 2-pole screw terminal connector; it will operate from a wide range
DC input 20-72Vdc.
Both types of power supply are internally fused; this fuse is only expected to fail under fault conditions. The fuse is located internally
underneath the earthed safety cover; this is not user serviceable and must be returned to ViaLite Communications for replacement.
On the front panel the module has a single LED indicator. This reports the status of the module. IF the LED is GREEN the module is
operating in its normal non-alarm state. If the LED is OFF, the power supply is not supplying 12V and has either failed or is in standby mode,
see section 4.7.

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17
5.1.1 Specification
HPS-3
HPS-3-DC
Description
Wide input range AC power supply
Wide input range DC power supply
Dimensions, internal (W x H)
6HP * 3U
Dimensions, external (W x H x D)
188 x 129 x 30 mm
Weight
0.6kg
Input Supply Power
110V or 230V nominal at 50/60Hz
88 - 264V absolute range
20 –72Vdc
Fuse
Internal, 4 A / 250 Vac
Internal, 10 A / 125 V
Efficiency
75%
84%
Switch on current
<20A @ 230Vac
<6.5A @ 20V input
Output voltage
12.0 +/ -0.5Vdc
Output ripple
50mV
Maximum input current
1.6A
6.5A
Maximum output power
100 W single PSU
180 W dual PSUs
Minimum load power
12 W
Inlet air temperature
-10 to +50C
Derating >+50C
1.5% / C, absolute maximum 70C
3% / C, absolute maximum 70C
Hot-swapping and Dual Redundant
Yes
Output overload
Built in overload protection switches output OFF and automatically restarts at 110% nominal current
Output over voltage protection
19Vdc
Status Indicators
Front panel GREEN power LED
Rear Panel alarm outputs
Power Good on J1 “Alarm Concentrator” connector
12V = Normal operation; 0V = Alarm
MTBF @40C
270 000 hours at 100% load
5.2 19” Chassis Power Requirements
The exact power requirements of modules are given in the module handbooks, however the details below maybe used to approximate the
power output requirements from the chassis mounted PSUs. The input power requirements can be calculated by using the power supply
efficiency given in section 5.1.1
Single Transmitter 2.0 W Typical per slot, excluding LNA/LNB power
Single DWDM Transmitter 3.2 W / 4.0W / 6.0 Typical per slot at 25/50/70°C, laser types “D”, “E” and “K”, excluding LNA/LNB power
Single Receiver 1.5 W Typical per slot
Dual Transmitter 4.0 W Typical per slot, excluding LNA/LNB power
Dual Receiver 2.6 W Typical per slot
Transceiver 3.3 W Typical per slot, excluding LNA/LNB power
Amplifier 2.4W Typical per slot
Serial Digital 0.7W Typical per slot
Switch 0.4W Typical per slot
Splitter 0.4W Typical per slot
Ethernet 1.9W Typical per slot
SNMP controller 4.0 W Typical per slot
Alarm and Load 1 W Typical, plus 0/3/6/9/12 W load, per slot
Redundancy load module 1 W Typical, plus 0/3/6/9/12 W load, per slot
LNA/LNB feed up to an additional 14.6 W per slot, if used (efficiency 89% typically and 80% minimum).
AC to DC efficiency see section 5.1.1
DC to DC efficiency see section 5.1.1
5.3 Redundancy load module, HRL
The redundancy load module ensures that when redundant power supplies are used, there is enough current for both power supplies to be
active. The module can provide a maximum load of 12 watts, this load can be switched in 3 watt steps. It can be fitted into a standard 5HP
slot.
The module can provide a maximum load of 12 watts, but this load can be switched in 3 watt steps
Load 0 / 3 / 6 / 9/ 12 watts switched
Control via switch selection, using four DIP switches
Setting* 1 or 2 modules fitted all four switches ON
3 or 4 modules fitted three switches ON
5 or 6 modules fitted two switches ON
7 or 8 modules fitted one switch ON
9 or more modules fitted
* These calculations assume the lowest possible power consumption to meet the minimum load specification; a more accurate calculation
can be made by either using the modules datasheets or the estimates in section 5.2.

HRK3-HB-8 VIALITEHD 3U CHASSIS HANDBOOK
18
5.3.1 Redundancy load module, plug-in card
The redundancy load module does not have a microprocessor, I2C bus or an alarm line. It will not be recognised by the ViaLiteHD SNMP
and web controller or included in the GUI. The alarm line of the module is resistively pulled down.
The ViaLiteHD Redundancy load module may have hot surfaces when operating under full load. Suitable precaution should be taken when
handling this device, see safety instructions.
5.3.2 Redundancy load module, front panel
The redundancy load plug-in module has two front panel LEDs for indication of the state of the module.
The following table shows the operation
Colour
SNMP and Web controller
LED1
GREEN
Normal
No light
No power
LED2
GREEN
LOAD ON (Any load resistor active)
No light
LOAD OFF
5.3.3 Redundancy load module, DIP switches
The ViaLiteHD Redundancy load module has one four way DIP switch (SW5) that configures the load.
The switch is on the rear side of the module and can be accessed with the module partially withdrawn.
SW5
Name
OFF
ON
Position 1
Load 1
Load resistor OFF
Load resistor ON
Position 2
Load 2
Load resistor OFF
Load resistor ON
Position 3
Load 3
Load resistor OFF
Load resistor ON
Position 4
Load 4
Load resistor OFF
Load resistor ON
LED1
LED2
DIP switch (SW5)

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19
5.3.4 Redundancy load module, setting the load DIP switches
Detail of the DIP switch positions are given in section 5.3.3. If you wish to activate any of the resistive loads follow the sequence below.
1. Calculate the additional load required, see section 5.1.1., 5.2 and 5.3
2. Round this load up to the nearest three watt step
3. Switch the appropriate number of DIP switches of SW5 to the ON position
Note. If sufficient load is not applied, it is possible for a PSU front panel power LED to be GREEN and the “power good” output to be LOW
(alarm state), in this case the power supply will not be registered by the ViaLiteHD summary alarm and SNMP and web controller cards.
5.3.5 Redundancy load module, using with SNMP and controller module
The redundancy load module is not fitted with a micro controller or I2C memory, so it is not visible on the ViaLiteHD controller GUI or
accessible via SNMP.
5.4 Power Supply HPS-CS-3 for use with OEM modules (HRx-xx-xM-xx)
The HPS-CS-3 is a Panel Mounting 12V DC output, mains input supply with a 15 way Molex connector for connection to ViaLiteHD OEM
modules (HRx-xx-xM-xx).
HPS-CS-3
Description
Wide input range AC power supply
Dimensions, external (W x H x D)
90 * 45 * 32 mm, supplied with mounting bracket
Lead length
1700mm typical
Weight
0.2kg
Input Supply Power
110V or 230V nominal at 50/60Hz
90 - 264V, 47-63Hz absolute range
Efficiency
83%
Output voltage
12.0 +/ -0.5Vdc
Output ripple
100mV pk-pk
Maximum output power
16 W, 1.5A @ 12V
Minimum load power
0 W
Status Indicators
GREEN power LED
Operating temperature
-20 to +60C, derate above +40C
Storage temperature
-20 to +85C
Derating >+40C
2.4% / C above +40C, absolute maximum 60C
Input protection
Over voltage protection
Output protection
Short circuit protected (Polyswitch)
Insulation class
Class 2
Power input
IEC-60320 2 pin input socket C8, supplied with matching power lead
Power output
Molex, CGRID3, 15 way socket (female)
Pin 4 = GND
Pin 5=+12V
Power connections match the requirements of ViaLiteHD OEM modules (HRx-xx-xM-xx)
All other pins are unconnected
Illustration of IEC-60320 2 pin input socket C8 configuration

HRK3-HB-8 VIALITEHD 3U CHASSIS HANDBOOK
20
HPS-CS-3 with supplied mounting bracket (power lead not shown)